Running board assembly for a vehicle



FIG. 1 is a left rear perspective view of a running board assembly for a vehicle in accordance with my design illustrated in the environment of use attached to a vehicle shown in phantom lines;

FIG. 2 is a left elevational view thereof ;

FIG. 3 is a plan view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a rear elevational view thereof.

The broken line showing of a vehicle is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a running board assembly for a vehicle, as shown and described. 